value unc_up unc_lo author ref method 6.62 0.750 0.750 Usui 2011PASJ...63.1117U NEATM 6.80 1.360 1.360 Ali-Lagoa 2018A&A...612A..85A NEATM 8.03 1.870 1.870 Nugent 2016AJ....152...63N NEATM 9.08 0.200 0.200 Masiero 2012ApJ...759L...8M NEATM